Boot speedup with readahead
Harald Hoyer
harald at redhat.com
Sun Sep 7 13:46:09 UTC 2008
Davide Moretti schrieb:
> On my system:
>
> Without readahead: 1 minute and 30 seconds
> With readahead: 1 minute and 30 seconds
>
> Time was until gnome applet showed up, so on my system readahead did not
> improve boot speed at all.
>
> Note that there is a bug that prevents readahead-collector from starting
> if you have selinux disabled, since the /.autorelabel file is still
> hanging around during reboots, I had to remove this file for collector
> to work.
>
> 1) The rhgb removal is a big step forwards, rhgb slows down things a lot.
> 2) One major thing to look at I think is the initrd and udev, these take
> really a lot of time
> 3) Get rid of that sysinit stuff and start using upstart jobs, I still
> have not seen any progress on this.
>
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Can you provide a bootchart for your system?
Best would be 2, one with and one without readahead
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